Home / 554,157.22-764,721.69-312,437.70

Finding the Fourth Proportional to 554,157.22, 764,721.69 and 312,437.70

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Solution

The fourth proportional to 554,157.22, 764,721.69 and 312,437.70 is: 431,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,157.22 : 764,721.69 = 312,437.70 : x
  2. Step 2: Convert to fraction form
    554,157.22/764,721.69 = 312,437.70/x
  3. Step 3: Cross multiply
    554,157.22x = 764,721.69 × 312,437.70
  4. Step 4: Simplify right side
    554,157.22x = 238,927,880,577.92
  5. Step 5: Solve for x
    x = 238,927,880,577.92/554,157.22
  6. Step 6: Final answer
    x = 431,155.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.